Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Zinc and carbon Nickel and cadmium Iron and cadmium Lead peroxide and lead Zinc and carbon Nickel and cadmium Iron and cadmium Lead peroxide and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry 'Vinegar' is a commercial name of Acetic acid Oxalic acid Citric acid Hydrochloric acid Acetic acid Oxalic acid Citric acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : Alcohol Petrol H2O2 Oxalic acid Alcohol Petrol H2O2 Oxalic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element in the earth’s atmosphere is Oxygen Nitrogen Argon Krypton Oxygen Nitrogen Argon Krypton ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who first published the periodic table John Dalton Julius Lothar Meyer Henry Moseley Dmitri Mendeleev John Dalton Julius Lothar Meyer Henry Moseley Dmitri Mendeleev ANSWER DOWNLOAD EXAMIANS APP
Chemistry Man dies in the atmosphere of CO, because it Dries up the blood Combines with O2 present in the body Combines with the haemoglobin of blood, thereby making the later incapable of absorbing O2 Reduces the organic matter of tissues Dries up the blood Combines with O2 present in the body Combines with the haemoglobin of blood, thereby making the later incapable of absorbing O2 Reduces the organic matter of tissues ANSWER DOWNLOAD EXAMIANS APP
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